the progress option should respect itself
write the output name instead of the normalized version in the message
I have R 3.0.0 now; no longer need the Makefile for vignettes
a new function wrap_rmd()
roxygenize
bump version
add the publish argument to knit2wp(); closes #512
a new helper function parse_only() to parse the R code but do not keep source
knit_env() is not used anywhere, so remove it
now cached chunks are evaluated in the same environment as normal chunks, and users can set cache.vars as the variable names to be saved

this is an ultimate fix to #456 and also solves the problem http://stackoverflow.com/q/15810976/559676
roxygenize
bump version